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. 2019 Dec 5;20:278. doi: 10.1186/s12931-019-1240-6

Table 1.

Baseline clinical and functional characteristics of COPD patients and SHS

COPD Control p-value
N 9 7
Sex ratio (male/female) 8 / 1 6 / 1
Age (years) 57.3 (6.0) 62.6 (4.5) NS
FEV1 (% pred.) 54.6 (17.5) 116.0 (13.1) p < 0.001
FEV1 / VC 43.6 (9.6) 76.2 (4.4) p < 0.001
PaO2 (mmHg) 71.1 (9.9)
PA level (Voorips score) 7.3 (3.2–8.3) 4.1 (1.7–4.9) NS $

Data are presented as mean (SD) or median (Q1-Q3). FEV1 Forced expiratory volume in 1 s, VC slow vital capacity, % pred: % predicted, PaO2 arterial oxygen tension, PA Physical activity. § Mann-Whitney U Test